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Relevant bibliographies by topics / Line distance protection / Dissertations / Theses

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Dissertations / Theses on the topic 'Line distance protection'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Tamilselvan, Karthi. "The Impacts of Ultra High Voltage AC line characteristics on line distance protection." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-194315.

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With the growing load demand, Ultra high Voltage (UHV) transmission lines are utilized in many countries around the world for bulk power transmission from remote locations over long distance. UHV transmission lines have typical features and it poses a challenge to the power system design with respect to protection, insulation and reactive power compensation, etc. Protection is a key issue in UHV transmission since a relay failure can interrupt and damage the power system. There are distance and differential protection schemes in the transmission line which account for security of the power sys

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2

Liang, Feng. "Performance enhancement of digital relays for transmission line distance protection /." Internet access available to MUN users only, 2003. http://collections.mun.ca/u?/theses,153681.

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3

Minns, Peter David. "Development of a distance protection system based on the transputer." Thesis, Northumbria University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358357.

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A Distance Protection System based on the Transputer has been developed in which the Distance Protection Scheme is modelled in Occam, a parallel processing language designed to support the concept of communicating sequential processes running on the Transputer. Two Data Acquisition arrangements have been investigated, one controlled by an Interfacing Transputer via Link Adaptors, the other making use of existing Protection Data Acquisition equipment controlled by the Interfacing Transputer through Dual Port RAM. In both cases other similar additional Transputer modules are interconnected with

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4

Summers, Clinton Thomas. "Distance Protection Aspects of Transmission Lines Equipped with Series Compensation Capacitors." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/35284.

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In order to meet the high demand for power transmission capacity, some power companies have installed series capacitors on power transmission lines. This allows the impedance of the line to be lowered, thus yielding increased transmission capability. The series capacitor makes sense because it's simple and could be installed for 15 to 30% of the cost of installing a new line, and it can provide the benefits of increased system stability, reduced system losses, and better voltage regulation.1 Protective distance relays, which make use of impedance measurements in order to determine the p

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5

Philippot, Luc. "Parameter estimation and error estimation for line fault location and distance protection in power transmission systems." Doctoral thesis, Universite Libre de Bruxelles, 1995. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212533.

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6

van, Rensburg Karel Jensen. "Analysis of arcing faults on distribution lines for protection and monitoring." Queensland University of Technology, 2003. http://eprints.qut.edu.au/15800/.

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This thesis describes an investigation into the influences of arcing and conductor deflection due to magnetic forces on the accuracy of fault locator algorithms in electrical distribution networks. The work also explores the possibilities of using the properties of an arc to identify two specific types of faults that may occur on an overhead distribution line. A new technique using the convolution operator is introduced for deriving differential equation algorithms. The first algorithm was derived by estimating the voltage as an array of impulse functions while the second algorithm was derive

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7

Ozdirek, Lutfiye. "Estimation Of Demography And Seasonal Habitat Use Patterns Of Anatolian Mouflon (ovis Gmelinii Anatolica) In Konya Bozdag Protection Area Using Distance Sampling." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12611189/index.pdf.

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The Anatolian mouflon (Ovis gmelinii anatolica) is an endemic ungulate subspecies and of IUCN Vulnerable status that inhabits Konya-Bozdag region located in Central Anatolia. In this thesis, the demography and habitat use of the only natural population of Anatolian mouflon at Konya-Bozdag Provice is studied. Throughout the study, distance sampling techniques, specifically line transect sampling, are used to estimate density, size and growth rate of this population. Sex, age and count data are used to estimate relevant parameters. Changes in population structure and seasonal area use are monit

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8

Muhayimana, Obed. "Chránění paralelních a souběžných vedení vvn distanční ochranou." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-264928.

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Chránění paralelních a souběžných vedení je skutečně problematické z důvodů účinku vzájemné indukčnosti vedení v souběhu, odporu poruchy nebo rozložení zpětného proudu poruchy, které zkreslují impedanci jednofázové poruchy „viděné“ distanční ochranou. Proto současné numerické distanční ochrany nabízí kompenzační funkce, které je možno použít pro korekci charakteristik a výpočtu vzdálenosti poruchy pomocí lokátorů její charakteristice s dostatečnou odporovou rezervou a možnosti nastavení odpovídajícího režimu vypnutí. Tato práce se zabývá problémy, kterým čelí lokátor distanční ochrany při měře

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9

Ghassemi, Foroozan. "Adaptive digital distance protection for series compensated transmission lines." Thesis, City University London, 1989. http://openaccess.city.ac.uk/8235/.

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Series capacitors offer considerable technical and economical advantages in long distance a.c. transmission. In particular, their excellent reliability and minimal maintenance requirements make series compensation the most cost effective method of enhancing the power transfer capability of an existing or proposed interconnection. E.H.V. lines employing series capacitors however, pose difficult problems for the line protection relays, not encountered with plain feeders. One important cause of these problems is the resonance between the series capacitor and the line series inductance, which in t

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10

Teliani, Mohamad. "Adaptive distance relaying scheme for the protection of Teed circuits." Thesis, City University London, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279328.

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11

Morais, Adriano Peres de. "Algoritmo de alto desempenho para proteção numérica de linhas de transmissão imune a oscilações de potência." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/3672.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This Doctoral Thesis proposes a new methodology for transmission line protection tolerant to power swings. The algorithm developed has the ability to detect, classify and locate all fault types with and without power swings, including those that produce high values of fault resistance. In a first step, it is proposed a fault distance estimator based on the leastsquare curve fitting. The fault locator, for protection proposes, was modeled by a series R-L circuit and differential equations. In a second step, the main causes and conse

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12

Shah, Syed Arif Ullah. "The impacts of series compensated EHV lines on distance protection, and a proposed new mitigation solution." Thesis, KTH, Elektroteknisk teori och konstruktion, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209916.

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Series compensation is extensively applied to the transmission lines to increase the power transfer capability of transmission lines, reduce transmission losses, improve voltage profiles, and improve power oscillation damping and transient stability of power systems. But it modifies the apparent impedance of the transmission lines during fault conditions and might cause the distance protection of transmission lines to encounter directional discrimination issues and reach problems. The non-linear characteristic of metal oxide varistor in series compensation model creates further complexity to t

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13

Moro, Vinícius de Cillo. "Metodologia para coordenação otimizada entre relés de distância e direcionais de sobrecorrente em sistemas de transmissão de energia elétrica." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18154/tde-30102014-093627/.

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A proteção de sistemas de energia elétrica possui papel extremamente importante no aspecto de garantir o fornecimento de energia de maneira segura e confiável. Assim, a ação indevida ou a não atuação deste sistema de proteção pode causar danos materiais ou econômicos tanto para as concessionárias quanto para os consumidores de energia elétrica. Dessa forma, o sistema de proteção deve estar bem ajustado para que possa garantir suas funções, sendo sensível, seletivo, confiável e rápido. Para tanto, uma boa coordenação entre os relés de proteção deve ser estabelecida. No caso de um sistema de tra

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14

COSTA, Cecília Alves Buriti da. "Modelagem de um relé de distância em um simulador digital em tempo real." Universidade Federal de Campina Grande, 2016. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/580.

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Submitted by Emanuel Varela Cardoso (emanuel.varela@ufcg.edu.br) on 2018-05-04T18:35:38Z No. of bitstreams: 1 CECÍLIA ALVES BURITI DA COSTA – DISSERTAÇÃO (PPGEE) 2016.pdf: 2848486 bytes, checksum: eb2cfb57825ecee909a3560f654a3038 (MD5)<br>Made available in DSpace on 2018-05-04T18:35:38Z (GMT). No. of bitstreams: 1 CECÍLIA ALVES BURITI DA COSTA – DISSERTAÇÃO (PPGEE) 2016.pdf: 2848486 bytes, checksum: eb2cfb57825ecee909a3560f654a3038 (MD5) Previous issue date: 2016-08-25<br>Capes<br>Este trabalho apresenta o processo de modelagem de um relé de distância em um simulador digital em tempo r

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15

Formiga, Diego Alves. "Estima??o de Fasores para Prote??o de Sistemas El?tricos Baseada em M?nimos Quadrados e Morfologia Matem?tica." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15485.

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Made available in DSpace on 2014-12-17T14:56:16Z (GMT). No. of bitstreams: 1 DiegoAF_DISSERT.pdf: 1045785 bytes, checksum: 38dd893df9531c8e71f483fc22aa3802 (MD5) Previous issue date: 2012-12-18<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>This work proposes a new technique for phasor estimation applied in microprocessor numerical relays for distance protection of transmission lines, based on the recursive least squares method and called least squares modified random walking. The phasor estimation methods have compromised their performance, mainly due to the DC exponentia

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16

Hong-Yuan, Chang, and 張鴻源. "Adaptive Distance Protection of Double-Circuit Line and Thyristor Controlled Series Compensator Line." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/14025060810846667871.

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17

Lin, Yu-liang, and 林裕梁. "Computer-Aided Calculation and Setting for Zone-2 Distance Relay Protection of Transmission Line." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/vzuz4e.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>95<br>In Taiwan, the main protection scheme of transmission lines include current differential relay, distance relay and pilot wire relay. The backup protection scheme of transmission lines include three zone distance relay and directional overcurrent relay. Among them, the settings of the backup protective relays need to be coordinated. According to the principle of the distance relay settings at present, this paper plans to use the relay settings coordination theory, the network admittance matrix abbreviation and the fault current distribution calculation trying to

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18

Kapuge, Kariyawasam Mudalige Sachintha Kariyawasam. "Implementation of an IEC 61850 Sampled Values Based Line Protection IED with a New Transients-Based Hybrid Protection Algorithm." 2016. http://hdl.handle.net/1993/31306.

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Over the course of the last decade, IEC 61850 has become the leading standard for electrical substation automation the world over. This thesis presents the work done towards implementing an IEC 61850 sampled values based line protection Intelligent Electronics Device (IED) on a desktop computer. This IED is capable of subscribing, decoding and processing the sampled values published by a source to be used in line protection algorithms. The novel hybrid line protection algorithm implemented in the IED combines a distance protection scheme with a transients-based unit protection method that u

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19

Magagula, Xolani. "The dynamic behaviour of distance protection relays on series compensated lines under fault conditions." 2014. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001762.

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M. Tech. Electrical Engineering<br>Investigates the reasons behind the poor performance of distance relays on series compensated lines. In order to achieve this objective, a case study will be established in a power system software (DigSilent Power Factory). Furthermore, a practical incident that occurred on Eskom's compensated network will be examined. However, prior to investigating the performance of the distance relay on transmission lines, there are some other critical aspects that have to be thoroughly understood. These aspects include amongst others: transmission line modelling ; numeri

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20

Srivastava, Sachin. "Behavior of Distance Relay Characteristics on Interconnecting Lines Fed From Wind Farms." Thesis, 2015. http://etd.iisc.ernet.in/2005/3539.

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Distance relays due to their selectivity and operating speed are used in HV/EHV line protection. The dynamic nature of Mho characteristic, which happens to be most primitive technique in line protection implemented with distance relaying, is built by using the measurement of local voltage and current signals. These signals have been influenced substantially by fault resistance and the source impedance feeding the line. In case of different generation sources, the source impedance and fault characteristic also change accordingly. Environmental benefit of wind turbine technology is making it a

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